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mplot3d, addition to losing color on movement of canvas. #761
Description
As a already known bug that the plot loses color when you move the axis.
It also tends to lose color when you do a print_figure.
So you can never create a png of the colored plot.
Activity
WeatherGod commented on Mar 13, 2012
Technically, this is the same bug. The specific known issue is that the colors are lost upon a redraw. If you want those colors for your saved images as a work-around, don't do a show and then save. Save first through savefig().
sb2nov commented on Mar 13, 2012
Thanks , I got it work. One thing which I observed was that the color map is lost only if you put an array to colormap. What is mean is that the color does not disappear when you specify a color like 'r' or something. Even if you have a lot of them.
WeatherGod commented on Mar 13, 2012
Correct. The issue is that the collection object tries to recalculate the alpha information to get the depth effects. However, it can't always retain the original colors specified and the colors become gray. Perhaps I can find time today to take another look at this bug.
Fix scatter3d bug
WeatherGod commented on Mar 13, 2012
PR #762 should fix this bug. Turns out it was very simple to fix, I just didn't understand ScalarMappables back when I originally investigated this.
sb2nov commented on Mar 13, 2012
Thanks a lot, so is the fix been updated or I need to wait for the PR to be confirmed ? I'm new to git so don't know exactly how it functions.
WeatherGod commented on Mar 13, 2012
Ideally, you could try out the branch yourself and confirm that it works for your needs (and importantly, doesn't break anything else), and let us know in the PR whether it works or not. The PR acts as a staging area for users and developers to comment and test out any possible changes. When accepted (that's a more ambiguous process for us...), it gets "pulled" into the target branch (in this case v1.1.x) and the issues are automatically closed.
sb2nov commented on Mar 13, 2012
I tested out the plot with the changes in the art3d file. It works well but the somehow the image quality doesn't look exactly same between the plots. I am not sure behind the reason for the difference.
WeatherGod commented on Mar 13, 2012
It would work best to comment at the Pull Request. Also, I need a more detailed description regarding the change in quality (resolution? aliasing? colors wrong?). Preferrably an image for before and after that I could compare.
sb2nov commented on Mar 13, 2012
Images showing the change in the image after fixing up.
On Tue, Mar 13, 2012 at 4:48 PM, Benjamin Root <
reply@reply.github.com
WeatherGod commented on Sep 20, 2012
Finally got some time to look at this again. I originally didn't see the difference, but now I do. What you are seeing is the application of the alpha-indicated depth. In other words, when a marker is farther away from the viewer, it is made more transparent to give it a sense of depth. Before the fix, the alpha value was getting set incorrectly. This is correct behavior.